Pay When Paid Group Number Status Field Not Updating When A/R Invoice In Pay When Paid Group is Full

I can not get the status to go from Inactive (1) to Active (2) when a cash receipt has fully paid the invoice that is linked in the Pay When Paid Group.  I created a new group using Add,  Then I chose unpaid vouchers to add to the pay when paid group.  I chose a Paid Invoice knowing that it had been posted and paid in full.  I linked the paid invoice to the unpaid vouchers in the Pay When Paid Group.  There is a Zero Threshold in the Customer Master, so I know that linking the paid invoice to